Wolfgang Preiser

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Covid Alert SA app: How it works, why it won’t steal your personal information – experts explain

22 Sept 2020

7 min read

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Inside Covid-19

SA virologist says Covid-19 type disease was found a few years ago – but world didn’t prepare

16 Sept 2020

10 min read

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Inside Covid-19

Inside Covid-19: Tracing app; scientists knew Covid-19 was coming – but didn’t prepare. Ep 81

08 Sept 2020

2 min read

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